Differences in age, sex, dialysis modality, concurrent hypertension, concurrent diabetes, dialysis duration, BMI, number of parathyroid gland detected on color ultrasound, number of parathyroid gland detected on ECT, number of parathyroid gland detected based on intraoperative pathology, preoperative BNP, serum Ca, serum P, TSH and AAC score between two groups were not significant (P > 0.05) (Table 1). The gene discussed is NPPB; the disease is hypertensive disorder.